0.6x+13=x^2-6

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Solution for 0.6x+13=x^2-6 equation:


Simplifying
0.6x + 13 = x2 + -6

Reorder the terms:
13 + 0.6x = x2 + -6

Reorder the terms:
13 + 0.6x = -6 + x2

Solving
13 + 0.6x = -6 + x2

Solving for variable 'x'.

Reorder the terms:
13 + 6 + 0.6x + -1x2 = -6 + x2 + 6 + -1x2

Combine like terms: 13 + 6 = 19
19 + 0.6x + -1x2 = -6 + x2 + 6 + -1x2

Reorder the terms:
19 + 0.6x + -1x2 = -6 + 6 + x2 + -1x2

Combine like terms: -6 + 6 = 0
19 + 0.6x + -1x2 = 0 + x2 + -1x2
19 + 0.6x + -1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
19 + 0.6x + -1x2 = 0

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-19 + -0.6x + x2 = 0

Move the constant term to the right:

Add '19' to each side of the equation.
-19 + -0.6x + 19 + x2 = 0 + 19

Reorder the terms:
-19 + 19 + -0.6x + x2 = 0 + 19

Combine like terms: -19 + 19 = 0
0 + -0.6x + x2 = 0 + 19
-0.6x + x2 = 0 + 19

Combine like terms: 0 + 19 = 19
-0.6x + x2 = 19

The x term is -0.6x.  Take half its coefficient (-0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
-0.6x + 0.09 + x2 = 19 + 0.09

Reorder the terms:
0.09 + -0.6x + x2 = 19 + 0.09

Combine like terms: 19 + 0.09 = 19.09
0.09 + -0.6x + x2 = 19.09

Factor a perfect square on the left side:
(x + -0.3)(x + -0.3) = 19.09

Calculate the square root of the right side: 4.369210455

Break this problem into two subproblems by setting 
(x + -0.3) equal to 4.369210455 and -4.369210455.

Subproblem 1

x + -0.3 = 4.369210455 Simplifying x + -0.3 = 4.369210455 Reorder the terms: -0.3 + x = 4.369210455 Solving -0.3 + x = 4.369210455 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + x = 4.369210455 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + x = 4.369210455 + 0.3 x = 4.369210455 + 0.3 Combine like terms: 4.369210455 + 0.3 = 4.669210455 x = 4.669210455 Simplifying x = 4.669210455

Subproblem 2

x + -0.3 = -4.369210455 Simplifying x + -0.3 = -4.369210455 Reorder the terms: -0.3 + x = -4.369210455 Solving -0.3 + x = -4.369210455 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + x = -4.369210455 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + x = -4.369210455 + 0.3 x = -4.369210455 + 0.3 Combine like terms: -4.369210455 + 0.3 = -4.069210455 x = -4.069210455 Simplifying x = -4.069210455

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.669210455, -4.069210455}

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